Flashcards in Solids, liquids and gases Deck (33):

1

## What is the process called from solid to liquid?

### melting

2

## What is the process called from liquid to solid?

### freezing

3

## What is the process called from liquid to gas?

### boiling

4

## What is the process called from gas to liquid?

### condensing

5

## What is the process called from gas to solid?

### sublimation

6

## What is the process called from solid to gas?

### sublimation

7

## How would you describe a gas?

### rapid, random, big spaces - most kinetic energy - they exert themselves onto the walls of their container and collide with the walls.

8

## How would you describe a solid?

### regular arrangement, vibrating - least kinetic energy

9

## How would you describe a liquid?

### still touching, can move around other

10

## When kinetic energy is added to a solid, liquid and a gas what happens to the temperature?

### It increases

11

## When kinetic energy is added to a solid, liquids and a gas what happens to the particles?

### They gain kinetic energy

12

## What happens when a substance is melting?

### Heat energy is used to break bonds between molecules.

13

## What happens when a substance is boiling?

### Heat energy is used to overcome attractive forces

14

## What is the formula for density?

### density = mass divided by volume

15

## What is the formula for volume of a cuboid?

### volume = width x length x height

16

## What is the formula for pressure?

### pressure = force divided by area

17

## At any point in a solid, liquid or gas which direction does the particles act?

### equally in all directions

18

## What is the formula for pressure at different depths in liquids?

### pressure = density x height x gravity. field strength

19

## What is the absolute temperature proportional to?

### to the average kinetic energy of the particles in a substance

20

## since gas particles exert a force on the walls of the container, they also exert pressure os how would you work out the pressure?

### pressure = force divided by area

21

## What is absolute zero equal to?

### -273 degrees celsius

22

## How do you go from degrees celsius to kelvins and the other way around?

### degrees celsius = K - 273 K = degrees celsius + 273

23

## What temp is absolute zero?

### 0 kelvins

24

## What is absolute zero?

### Where the particles stop moving and there is no pressure.

25

## In a fixed volume if you increase the temperature what happens to the temperature?

### it increases due to increased speed of collision and hence increased force or increase rate/ frequency of collision.

26

## If you double the temp in kelvins what happens to the pressure ?

### it doubles

27

## What is the formula for doubling temp in kelvins and doubling the pressure?

### P1 x T2 = P2 x T2 or P1 dived by T1 = P2 divided by T2

28

## For a fixed temperature, what happens when you halve the volume of the container?

### It doubles the rate of collision and doubles the pressure.

29

## What is the formula for Boyle's law?

### P1 x V1 = P2 x V2 or P1 = (P2 x V2) divided by V1 or P2 = (P2 x V2) divided by P1

30

## What is the formula for the change in thermal energy?

### change in thermal energy = mass x specific heat capacity x change in temp.

31

## What is the difference between accuracy and precision?

### Precision = an indication of the smallest increment that can be measured on an instruments scale. and Accuracy = an indication of how close a measurement is to it's actual value (for a given level of precision)

32

## Describe an experiment where the temperature remains constant during changes of state.

### - Put ice in a test tube with a thermometer and measure the temperature every 2 minutes until it's melted.

33